> I have started to receive spam to my list address that I only use for
> mailing lists. I suspect that there is a "open" majordomo somewhere
> out there. No idea where.

It's right here.. I've just verified experimentally that it is indeed
possible for anyone who knows how to use the EXPN SMTP command to
easily obtain all subscriber e-mail addresses for the lists at
GreatCircle.COM

-- Norbert.

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